Free Printable Estimation

1.

What is 20% of 60?

a)

3

b)

6

c)

12

d)

30

2.

What is 5% of 80?

a)

4

b)

8

c)

20

d)

16

3.

What is 100% of 92?

a)

920

b)

9.2

c)

0.92

d)

92

4.

What is 10% of 70?

a)

0.7

b)

7

c)

14

d)

0.07

5.

What is 50% of 80?

a)

4

b)

8

c)

40

d)

60

6.

Jessica earns a base salary of $150.00 every week with an additional 14% commission on everything she sells. If Jessica sold $1650.00 worth of items last week, what was her total pay?

a)

$231

b)

$381

c)

$252

d)

$1,650

7.

Sharon makes money by commission rates. She gets 17% of everything she sells. If Sharon sold $37000 worth of items this month, what is her salary for the month?

a)

$14,800

b)

$5,180

c)

$629

d)

$6,290

8.

Amelia sells jewelry. She make a total of 12% of commission off of her sales. How much commission Amelia make when she sells $22,540 worth of jewelry.

a)

13,780.80

b)

$450.80

c)

$2,704.80

d)

$304.80

9.

Which of the following is the best estimate for the measurement of this angle?

a)

45 degrees

b)

36 degrees

c)

15 degrees

d)

5 degrees

10.

Which of the following is the best estimate for the measure of the angle?

a)

175 degrees

b)

180 degrees

c)

100 degrees

d)

155 degrees

11.

Estimate what the length of a regular pencil is.

a)

15 inches

b)

60 centimeters

c)

7 inches

d)

2 meters

12.

DO NOT SOLVE
Sophia lunch today cost $12.99. She knows tax is 8% and wants to leave a 25% tip. How much should she pay total?
Choose: Which of the answer choices is the most unreasonable?

a)

$4.29

b)

$16.24

c)

$14.09

d)

$17.28

13.

DO NOT SOLVE
Cabela's has a tent that is normally $120 that is on sale for $90. What is the percent decrease in price?
Choose: Which of the answer choices is the most unreasonable?

a)

20%

b)

25%

c)

30%

d)

$25

14.

What is 82% As a decimal?

a)

8200

b)

820

c)

0.082

d)

0.82

15.

What percent is 40 of 200?

a)

10

b)

30

c)

20

d)

40

16.

What is 0.4 as a percent?

a)

40%

b)

4%

c)

.4%

d)

400%

17.

The regular price of a sofa is $599.99.
If there sales tax is 6%
How much will the sofa cost?

a)

$508.79

b)

$479.99

c)

$635.99

d)

$489.59

18.

How much would a new iPhone 7 cost total if it's $649.00 and there's a 7% tax rate?

a)

$45.43

b)

$649.07

c)

$603.57

d)

$694.43

19.

What percent is 49 of 54 ?

a)

91%

b)

36%

c)

79%

d)

21%

20.

21 out of 98 is what percent ?

a)

21%

b)

14%

c)

58%

d)

75%

21.

Kimberly's family has a dinner bill of $26 and wants to leave a 15% tip for their server. How much tip are they leaving?

a)

29.90

b)

39.00

c)

4.00

d)

3.90

22.

Starting money = $350.
Interest rate = 2.5%
TIme = 3 years.
How much interest?

a)

$7.50

b)

$26.25

c)

$87.5

d)

$262.50

23.

Principal = $800
Interest Rate = 3.5%
Time = 2 years
Find the interest earned.

a)

56

b)

140

c)

168

d)

16.80

24.

Ann puts $300 in a bank account earning 4% interest. How much will she earn in interest in 1 year?

a)

4

b)

8

c)

12

d)

16

25.

Write the percent as a decimal.
4.3%

a)

4.3

b)

.43

c)

.043

d)

4300

26.

Write the percent as a decimal.
5%

a)

5

b)

.5

c)

.05

d)

500

27.

What percent is in color?

a)

620%

b)

1/2

c)

60%

d)

62%

28.

What percent is in color?

a)

3%

b)

30%

c)

33%

d)

300%

29.

What is 20% of 200?

a)

20

b)

30

c)

40

d)

50

30.

You are purchasing a T.V for $990 T.V with 9% sales tax. What is the final price of the T.V.?

a)

$ 1881.00

b)

$ 1079.00

c)

$ 1,079.10

d)

$ 1,709.1

31.

Sales tax is __________ to the price

a)

subtracted

b)

added

c)

multiplied

d)

divided

32.

Do you add or subtract for a discount?

a)

add

b)

subtract

c)

multiply

d)

divide

33.

Write 37.5% as a fraction

a)

3/7

b)

3/5

c)

3/8

d)

3/4

34.

Choose the best estimate for 33.3% of 65

a)

2

b)

20

c)

30

35.

What percent of 50 is 20?

a)

40%

b)

25%

c)

2.5%

d)

4%

36.

Write 7/8 as a percent.

a)

62.5%

b)

87.5%

c)

88.888...%

d)

8.333...%

37.

Write 40% as a fraction.

a)

5/6

b)

5/9

c)

3/8

d)

2/5

38.

Write 4/5 as a percent.

a)

20%

b)

40%

c)

80%

d)

45%

39.

Write 75% as a fraction.

a)

3/5

b)

3/4

c)

5/7

d)

4/7

40.

Write 1/3 as a percent.

a)

33.333...%

b)

33%

c)

13%

d)

37.5%

41.

Write 20% as a fraction.

a)

1/4

b)

1/5

c)

1/6

d)

1/7

42.

Write 3/5 as a percent.

a)

20%

b)

40%

c)

60%

d)

80%

43.

Write 66.666...% as a fraction

a)

1/3

b)

2/3

c)

3/5

d)

6/7

44.

Change ¹/₂ into a decimal.

a)

0.5

b)

0.25

c)

0.33333...

d)

0.6666...

45.

Change ¹/₄ to a decimal.

a)

0.5

b)

0.3333...

c)

0.25

d)

0.1

46.

Change ¹/₂ to a percent.

a)

25%

b)

10%

c)

50%

d)

100%

47.

Change ¹/₄ to a percent.

a)

10%

b)

20%

c)

25%

d)

50%

48.

Change ²/₃ to a decimal.

a)

0.3333...

b)

0.6666...

c)

0.25

d)

0.1

49.

Change ²/₃ to a percent.

a)

33.3333...%

b)

66.6666...%

c)

25%

d)

10%

50.

What fraction is equivalent to the decimal 0.3333333333...?

a)

1/2

b)

2/3

c)

1/3

d)

1/4

51.

Which decimal is 1/5 equivalent to?

a)

0.4

b)

0.05

c)

0.3

d)

0.2

52.

What fraction is equivalent to the decimal 0.75?

a)

1/4

b)

3/5

c)

3/6

d)

3/4

53.

Percent actually means...

a)

Use common sense.

b)

Your 5 senses

c)

Use complete sentences

d)

Out of 100

54.

Find the percentage for 3 out of 5.

a)

35%

b)

50%

c)

60%

d)

70%

55.

60 is what percent of 30?

a)

200%

b)

100%

c)

30%

d)

60%

56.

Sieling tried 8 half court shots. He made none. Find the percentage.

a)

0

b)

1

c)

5

d)

8

57.

Convert to a decimal
2/8

a)

.25

b)

.34

c)

.75

d)

.44...

58.

In a class of 30 kids, 3 forgot to get their report cards signed. What percent is that?

a)

3%

b)

30%

c)

10%

d)

70%

59.

Henry has 15 lawns mowed out of a total of 60 lawns. What percent is that?

a)

15

b)

25

c)

19

d)

4

60.

What is 50% of 30?

a)

45

b)

15

c)

30

d)

10

61.

What is 25% of $24?

a)

$4

b)

$8

c)

$6

d)

$18

62.

What is 10% of $18.30?

a)

$183

b)

$10.00

c)

$1.83

d)

$0.18

63.

What is 50% of 18?

a)

36

b)

9

c)

12

d)

5

64.

What is 25% of 40?

a)

6

b)

4

c)

10

d)

8

65.

What is 30% of 1,000?

a)

300

b)

30

c)

3,000

d)

100

66.

What is 50% of 68?

a)

6.8

b)

34

c)

340

d)

680

67.

Calculate 25% of 80

a)

20

b)

80

c)

48

d)

95

68.

Choose the best estimate for 50% of 29.85.

a)

3

b)

12

c)

15

69.

Round off 456,678 to the nearest thousand.

a)

466,000

b)

457,000

c)

456,000

d)

465,000

70.

Round 143 to the nearest ten

a)

100

b)

130

c)

140

d)

150

71.

Round 789 to the nearest hundred

a)

800

b)

700

c)

780

d)

790

72.

Round 3,434 to the nearest thousand

a)

3,000

b)

3,400

c)

3,430

d)

4,000

73.

Round 6,929 to the thousands place.

a)

6,000

b)

7,000

c)

6,900

74.

Using estimation, 36 x 69 is closest to...

a)

1800

b)

2800

c)

2400

d)

1200

75.

Use estimation to find the closest product for 56 x 76

a)

4,200

b)

4,800

c)

480

d)

3,500

76.

Use rounding to the nearest 10 to estimate

271+425

(a)

77.

Estimate the answer to:

578 + 720

a)

1300

b)

1200

c)

1290

d)

1298

78.

Estimate the answer to:

1965 - 370

a)

1600

b)

1500

c)

1595

d)

2400

79.

$8.65-28.28+118.36$

a)

$138.73$

b)

$137.99$

c)

$98.73$

d)

$9.873$

80.

$99.25-9.25\times8.24$

a)

$741.6$

b)

$91.628$

c)

$23.03$

d)

$2.303$

81.

$82.45\times9.78$

a)

$80.6361$

b)

$806.361$

c)

$8\ 063.61$

d)

$80\ 631.1$

82.

$205.4\times66.4$

a)

$136\ 385.6$

b)

$13\ 638.56$

c)

$136.3856$

d)

$13.63856$

83.

$30.03\times0.065$

a)

$1.951\ 95$

b)

$19.519\ 5$

c)

$195.195$

d)

$1951.95$

84.

$0.310\ 02\div0.025$

a)

$1240.08$

b)

$124.008$

c)

$12.400\ 8$

d)

$1.240\ 08$

85.

Estimate, correct to 1 significant figure. $3.243\times9.547$

a)

$30$

b)

$35$

c)

$20$

d)

$25$

86.

$2.355\div0.12$

a)

$19.625$

b)

$196.25$

c)

$1.9625$

d)

$0.962\ 5$

87.

$9.124\times3.173$

a)

$2.892\ 308$

b)

$28.923\ 08$

c)

$289.230\ 8$

d)

$2892.308$

88.

$\frac{47\times9.072}{8-0.8}$

a)

$5.922$

b)

$59.22$

c)

$592.2$

d)

$5922$

89.

Which number would round to 60?

a)

54

b)

68

c)

45

d)

55

90.

Which of the following is the best estimate of the total number of Aliens attending the open house?

a)

1400

b)

1412

c)

1350

d)

1300

91.

Mrs. Rogers and Mr. Gilbert are competing to see who can write the most discipline referrals by the end of the year.

Mrs. Rogers wrote 10,556 referrals.

Mr. Gilbert wrote 5,417 referrals.

Which of the following is the best estimate of how many more referrals Mrs. Rogers wrote than Mr. Gilbert wrote?

a)

3000

b)

1500

c)

1600

d)

6000

92.

Mr. Gilbert bought a new game system and three games. The game system was $299, and the games cost between $40 and $60. Which of the following is not a reasonable cost for the game system and the three games?

a)

$420

b)

$480

c)

$400

d)

$450

93.

In between what two integers is the square root of 77?

a)

5 and 6

b)

6 and 7

c)

7 and 8

d)

8 and 9

94.

In between what two integers is the square root of 44?

a)

3 and 4

b)

4 and 5

c)

5 and 6

d)

6 and 7

95.

Which number is NOT a perfect square?

a)

196

b)

169

c)

121

d)

132

96.

Estimate the square root.

a)

Between 4 and 5 and closer to 5

b)

Between 5 and 6 and closer to 6

c)

Between -4 and -5 and closer to -5

d)

Between -5 and -6 and closer to -6

97.

Which number has a square root that is between 7 and 8?

a)

48

b)

81

c)

60

d)

36

98.

Select the set with all perfect squares.

a)

-144, 9, 50, 75, 81, 100

b)

9, 50, 81, 100

c)

9, 50, 75, 81, 100

d)

9, 81, 100

99.

Estimate the square root.

a)

Between 3 and 4 and closer to 3

b)

Between 2 and 3 and closer to 3

c)

Between 3 and 4 and closer to 4

d)

Between 2 and 3 and closer to 2

100.

Estimate the SUM:
9.1 + 7.9

a)

15

b)

17

c)

18

d)

2

101.

Round 1.059 to 1 decimal place

a)

1.1

b)

1.06

c)

1.0

d)

1.05

102.

Round 1.059 to 2 decimal places

a)

1.06

b)

1.05

c)

2.06

d)

0.06

103.

$Round\ \pi\ to\ 3\ decimal\ places$

a)

3.142

b)

3.141

c)

3.140

d)

3.152

104.

$Round\ \left(2\times4.193\right)\ to\ 2\ decimal\ places$

a)

8.39

b)

8.386

c)

8.38

d)

8.396

105.

Round 4,401.3 to one significant figure

a)

4,000

b)

4

c)

4,400

d)

5,000

106.

Round 20,913 to two significant figures

a)

21,000

b)

20,900

c)

20,000

d)

2,100

107.

Round 0.0036 to one significant figure

a)

0.004

b)

0.0

c)

0.003

d)

0.04

108.

Round 6 to one significant figure

a)

6

b)

7

c)

10

d)

6.0

109.

Round 6283 to the nearest Hundreds

a)

6300

b)

62830

c)

6200

d)

6280

110.

Round 2598 to the nearest thousands

a)

3600

b)

3500

c)

2000

d)

3000

111.

Bobby has 44 toy cars and trucks. He also has 62 ninja turtles and soldiers. Estimate how many toy cars, trucks, ninja turtles and soldiers Bobby has.

a)

86

b)

10

c)

100

112.

Amy had 13 jelly beans in her left hand and 28 in her right hand. Estimate how many jelly beans Amy had in all.

a)

45

b)

40

c)

50

d)

30

113.

Round 1,285 to the nearest hundred.

a)

1,200

b)

1,300

c)

1,290

d)

1,280

114.

Round off 7317 to nearest ten

(a)

115.

Round off 8725 to nearest thousand

(a)

116.

Round off the numbers to the nearest ten

13

a)

10

b)

20

117.

21

Round off the numbers to the nearest ten

a)

20

b)

30

118.

66

Round off the numbers to the nearest ten

a)

60

b)

70

119.

Estimate and solve to nearest tens

203 - 109

a)

91

b)

90

c)

92

d)

94

120.

Estimate and solve to nearest hundreds

487 + 309

a)

797

b)

798

c)

799

d)

800

121.

Estimate and solve to nearest tens

48 + 76

a)

124

b)

127

c)

108

d)

130

122.

Estimate and solve to nearest tens

2792 + 4782

a)

7570

b)

7580

c)

7560

d)

7590

123.

Estimate and solve to nearest tens

798 + 802

a)

1400

b)

1500

c)

1600

d)

1700

124.

Estimate and solve to nearest tens

268 + 796

a)

1050

b)

1060

c)

1070

d)

1080

125.

If you receive $25\%$ off an item costing $\$22.00$ , how much money do you save?

a)

$\$5.50$

b)

$\$4.25$

c)

$\$27.50$

d)

$\$16.50$

126.

Estimate 24+67=

a)

910

b)

80

c)

95

d)

90

127.

Cale bought 231 cows and Lisa bought 392 cows. About how many total cows did they buy?

a)

600 cows

b)

500 cows

c)

200 cows

d)

100 cows

128.

369+498

a)

857

b)

867

c)

853

d)

789

129.

1677+4348

a)

6025

b)

6387

c)

6839

d)

6024

130.

6745+8475

a)

19836

b)

15220

c)

15330

d)

17879

131.

9836-6365

a)

3659

b)

3476

c)

3472

d)

3471

132.

784-262

a)

522

b)

625

c)

874

d)

878

133.

784-763

a)

21

b)

22

c)

31

d)

41

134.

The weight of a bag of potatoes is 25 kg, correct to the nearest kg.

What is smallest possible weight of the bag of potatoes?

a)

24 kg

b)

24.5 kg

c)

25 kg

d)

25.5 kg

135.

The length of a line is 63 centimetres, correct to the nearest centimetre.

What the greatest possible length of the line?

a)

62 cm

b)

62.5 cm

c)

64 cm

d)

63.5 cm

136.

The number 90 has been rounded to 1 significant figure.

What is the lower boundary of the number?

a)

90.5

b)

100

c)

95

d)

85

137.

A rectangular plot of land has sides with lengths of 38 m and 52 m correct to the nearest m.

Calculate the maximum possible values of the perimeter of the rectangle.

a)

180 m

b)

147 m

c)

91 m

d)

182 m

138.

Hannah measures with a ruler that has marks every 0.1 cm. She says that the lengths of the side of a rectangle are 8.5 cm and 12 cm correct to 1 decimal place.

Calculate the minimum possible values of the perimeter of the rectangle.

a)

20.4 cm

b)

39.9 cm

c)

40.6 cm

d)

40.8 cm

139.

The weight of a bag of potatoes is 25 kg, correct to the nearest kg.

What is smallest possible weight of the bag of potatoes?

a)

24 kg

b)

24.5 kg

c)

25 kg

d)

25.5 kg

140.

The length of a line is 63 centimetres, correct to the nearest centimetre.

What the greatest possible length of the line?

a)

62 cm

b)

62.5 cm

c)

64 cm

d)

63.5 cm

141.

The weight of a bag of potatoes is 25 kg, correct to the nearest kg.

What is smallest possible weight of the bag of potatoes?

a)

24 kg

b)

24.5 kg

c)

25 kg

d)

25.5 kg

142.

The length of a line is 63 centimetres, correct to the nearest centimetre.

What the greatest possible length of the line?

a)

62 cm

b)

62.5 cm

c)

64 cm

d)

63.5 cm

143.

A field is in the shape of a rectangle. The width of the field is 28 metres, measured to the nearest metre.

Work out the upper bound of the width of the field.

a)

28 m

b)

57 m

c)

56 m

d)

28.5 m

144.

The number 90 has been rounded to 1 significant figure.

What is the lower boundary of the number?

a)

90.5

b)

100

c)

95

d)

85

145.

The weight of a pram is 10 kg, correct to the nearest kg.

Find the greatest possible weight of the pram.

a)

11 kg

b)

10.4 kg

c)

10.5 kg

d)

9.5 kg

146.

The length of a card is 20.5 cm to the nearest tenth of a cm.

The interval on the number line below shows all the possible real lengths of the card.

Which of the following is/are correct for the value of C and E?

[You can choose more than one possible answer]

a)

C = 20.40

b)

C = 20.45

c)

E = 20.60

d)

E = 20.55

147.

A rectangular plot of land has sides with lengths of 38 m and 52 m correct to the nearest m.

Calculate the maximum possible values of the perimeter of the rectangle.

a)

180 m

b)

147 m

c)

91 m

d)

182 m

148.

Hannah measures with a ruler that has marks every 0.1 cm. She says that the lengths of the side of a rectangle are 8.5 cm and 12 cm correct to 1 decimal place.

Calculate the minimum possible values of the perimeter of the rectangle.

a)

20.4 cm

b)

39.9 cm

c)

40.6 cm

d)

40.8 cm

149.

The round off value of 78.25m to the nearest 10m is

a)

90

b)

78

c)

80

d)

75

150.

Round 3650 to 2 significant figures.

a)

3600

b)

0.36

c)

3700

d)

37

151.

Which of these numbers below has 3 significant figures?

a)

0.086

b)

2546

c)

0.630

d)

9.101

152.

The round off value of 38.23 to the nearest whole number is

a)

35

b)

40

c)

39

d)

38

153.

Round 866 to 2 significant figures.

a)

900

b)

860

c)

870

d)

865

154.

Round 866 to 2 significant figures.

a)

900

b)

860

c)

870

d)

865

155.

The number of significant figures in 9.00823 are

a)

Five

b)

Six

c)

Three

d)

One

156.

The round off value of $\frac{80}{70}$ up to four decimal places is

a)

0.4658

b)

1.1428

c)

0.4822

d)

0.4606

157.

Which of these is an approximation of π?

a)

\frac{21}{7}

b)

$\frac{22}{7}$

c)

$\frac{7}{22}$

d)

$\frac{21}{6}$

158.

The number of significant figures in value 0.0891 are

a)

Four

b)

Three

c)

Five

d)

Two

159.

The estimated value of the product of 6.4 and 7.9 is

a)

50.56

b)

505.6

c)

5.056

d)

0.056

160.

Round 234578 to 3 significant figures

a)

235

b)

234000

c)

235000

d)

234

161.

The round off value of 348g to the nearest 10g is

a)

340g

b)

345g

c)

300g

d)

350g

162.

The estimated value of 74.6 ⁄ 3.8 is

a)

1.963

b)

19.63

c)

196.3

d)

196.3

163.

When rounding, which statement is not correct?

a)

5 is halfway between 0 and 10

b)

5 or more, round up

c)

when the number is 5 we write as half

d)

4 or below we round down

164.

What is the correct decimal approximation for Pi to two decimal places?

a)

3.14

b)

3.04

c)

4.13

d)

3.25

165.

How many significant figures does 32.01 have?

a)

no significant figures

b)

3 significant figures

c)

2 significant figures

d)

4 significant figures

166.

How many sig figs are there?
100.00

a)

1

b)

3

c)

4

d)

5

167.

How many sig figs are there?
4004

a)

1

b)

2

c)

3

d)

4

168.

Round 1047.78 to three sig figs

a)

104

b)

105

c)

1050

d)

1050.00

169.

What is 78.5 rounded to one significant figure?

a)

79

b)

8

c)

78

d)

80

170.

What is 98.907 rounded to 1 significant figure?

a)

98.9

b)

90

c)

100

d)

1

171.

How many significant figures are in 107,003 m?

a)

3

b)

4

c)

6

d)

5

172.

Which of the following is NOT a perfect square?

a)

9

b)

16

c)

36

d)

45

173.

869.43 + 361.28

Write the question rounded to 1 significant figure

a)

900 + 400

b)

800 + 400

c)

900 + 300

d)

800 + 300

174.

879.32 - 685.17

Write the question rounded to 1 significant figure

a)

900 - 600

b)

800 - 600

c)

900 - 700

d)

900 - 700

175.

77.78 x 1.1

Write the question rounded to 1 significant figure

a)

80 x 2

b)

70 x 2

c)

80 x 1

d)

70 x 1

176.

54.15 ÷ 8.2

Write the question rounded to 1 significant figure

a)

50 ÷ 8

b)

60 ÷ 8

c)

50 ÷ 9

d)

60 ÷ 9

177.

181.141 x 0.117

Write the question rounded to 1 significant figure

a)

100 x 0.2

b)

200 x 0.1

c)

200 x 0.2

d)

100 x 0.1

178.

2.06 x 8.15

Write the question rounded to 1 significant figure

a)

2 x 9

b)

2 x 8

c)

3 x 8

d)

3 x 9

179.

116.677 ÷ 0.521

Write the question rounded to 1 significant figure

a)

100 ÷ 0.6

b)

200 ÷ 0.5

c)

200 ÷ 0.6

d)

100 ÷ 0.5

180.

655.37 + 561.12

Write the question rounded to 1 significant figure

a)

600 + 600

b)

700 + 500

c)

700 + 600

d)

600 + 500

181.

551.79 - 358.43

Write the question rounded to 1 significant figure

a)

600 - 300

b)

500 - 400

c)

500 - 300

d)

600 - 400

182.

381.55 + 163.85

Write the question rounded to 1 significant figure

a)

300 + 100

b)

400 + 200

c)

300 + 200

d)

400 + 100

183.

472.41 - 353.72

Estimate the answer to 1 significant figure

a)

50

b)

0

c)

200

d)

100

184.

182.84 x 8.3

Estimate the answer to 1 significant figure

a)

800

b)

1800

c)

900

d)

1600

185.

129.66 ÷ 1.3

Estimate the answer to 1 significant figure

a)

150

b)

100

c)

50

d)

200

186.

2.19 x 7.83

Estimate the answer to 1 significant figure

a)

14

b)

24

c)

16

d)

21

187.

84.674 x 0.219

Estimate the answer to 1 significant figure

a)

16

b)

24

c)

27

d)

18

188.

14.815 ÷ 0.215

Estimate the answer to 1 significant figure

a)

70

b)

46

c)

75

d)

50

189.

859.38 + 151.97

Estimate the answer to 1 significant figure

a)

900

b)

1100

c)

1000

d)

1200

190.

654.29 - 378.22

Estimate the answer to 1 significant figure

a)

200

b)

350

c)

400

d)

300

191.

163.15 x 1.2

Estimate the answer to 1 significant figure

a)

300

b)

100

c)

400

d)

200

192.

39.83 x 51.63

Estimate the answer to 1 significant figure

a)

2000

b)

1500

c)

1800

d)

2400

193.

74.46 ÷ 7.9

Estimate the answer to 1 significant figure

a)

10.25

b)

11.43

c)

8.75

d)

10

194.

113.142 ÷ 0.219

Estimate the answer to 1 significant figure

a)

500

b)

333

c)

1000

d)

666

195.

574.42 + 485.57

Estimate the answer to 1 significant figure

a)

900

b)

1100

c)

1000

d)

1050

196.

687.33 - 361.27

Estimate the answer to 1 significant figure

a)

350

b)

200

c)

400

d)

300

197.

974.92 - 348.27

Estimate the answer to 1 significant figure

a)

600

b)

550

c)

700

d)

500

198.

474.23 - 281.65

Estimate the answer to 1 significant figure

a)

100

b)

400

c)

300

d)

200

199.

672.23 + 161.93

Estimate the answer to 1 significant figure

a)

900

b)

800

c)

750

d)

700

200.

13.353 x 0.526

Estimate the answer to 1 significant figure

a)

5

b)

6

c)

10

d)

12

Estimation

Total questions: 200

Worksheet time: 3hrs 20mins

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